As many forms of PD begin in the gut, and only later migrate to brain, the initiating and causal gut problems will still remain too after the brain damage has occured. We will certainly need to address these digestive tract issues, therefore, if we are ever to fully heal. In my view, even if we could correct the resulting brain problems tomorrow, if we do not also attend to the original causes which reside in gut then we will not be "fixed" for very long.